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MCQs

Total Questions : 2607 | Page 111 of 261 pages
Question 1101.
 
When a closely
coiled helical spring is subjected to a couple about its axis, the
stress induced in the wire material of the spring is
  1.    bending stress only
  2.    a combination of torsional shear stress and bending
  3.    direct shear stress only
  4.    a combination of bending stress and direct shear stress
 Discuss Question
Answer: Option A. -> bending stress only


Question 1102.

 
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)


  1.    d + 17 mm
  2.    2 d + 13 mm
  3.    2 d + 20 mm
  4.    3.5 d
 Discuss Question
Answer: Option B. -> 2 d + 13 mm


Question 1103.


A bolt of M 24 x 2 means that


  1.    the pitch of the thread is 24 mm and depth is 2 mm
  2.    cross-sectional area of the threads is 24 mm2
  3.    the nominal diameter of bolt is 24 mm and pitch is 2 mm
  4.    the effective diameter of bolt is 24 mm and there are 2 threads per cm
 Discuss Question
Answer: Option C. -> the nominal diameter of bolt is 24 mm and pitch is 2 mm


Question 1104.


Creep in belt is due to


  1.    material of the belt
  2.    material of the pulley
  3.    uneven extensions and contractions due to varying tension
  4.    all of the above
 Discuss Question
Answer: Option C. -> uneven extensions and contractions due to varying tension


Question 1105.

.The minimum
number of teeth on the pinion which will mesh with any gear without
interference for `20^circ` full depth involute teeth will be


  1.    12
  2.    14
  3.    18
  4.    24
 Discuss Question
Answer: Option C. -> 18


Question 1106.

The machine screws are


  1.    slotted for a screw driver and are generally used with a nut
  2.    similar to tap bolts except that they are of small size and a variety of shapes of heads are available
  3.    used to prevent relative motion between the two parts
  4.    none of the above
 Discuss Question
Answer: Option A. -> slotted for a screw driver and are generally used with a nut


Question 1107.


A bolt is designed on the basis of __________ with a large factor of safety.


  1.    direct tensile stress
  2.    direct compressive stress
  3.    direct bending stress
  4.    direct shear stress
 Discuss Question
Answer: Option A. -> direct tensile stress


Question 1108.

A quarter turn belt drive is used when the shafts are arranged at right angles and rotate in one definite direction.


  1.    Yes
  2.    No
 Discuss Question
Answer: Option A. -> Yes


Question 1109.
The bolts of smaller diameter than M16 are not permitted in making fluid tight joints.
  1.    Correct
  2.    Incorrect
 Discuss Question
Answer: Option A. -> Correct


Question 1110.

According to Indian standard specifications, a plain carbon steel designated by 40C8 contains carbon


  1.    0.20 to 0.40%
  2.    0.35 to 0.45%
  3.    0.40 to 0.60%
  4.    none of these
 Discuss Question
Answer: Option B. -> 0.35 to 0.45%


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